Brake-cylinder head



(No Model.)

G. WESTINGHOUSE, Jr.

BRAKE CYLINDER HEAD.

No. 432,715. v Patented July 22, 1890.

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GEORGE VESTINGHOUSE, JR., OF PITTSBURG, PENNSYLVANIA.

BRKE-CYLINDERHEAD.

SPECIFICATION forming part of Letters Patent No. 432,715, dated July 22,1890.

Application filed July 27, 1889. Serial No. 318,913. (No model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE WnsrrNcHoUsE Jr., a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented or discovered a certain new and usefulImprovement in Brake-Cylinder Heads, of which improvement the followingis a specification.

The object of my invention is to provide a brake-cylinder head forautomatic air-brake apparatus of such construction as will effect areduction of joints and intermediate connections and a shorter traversefor air, and admit of a compact arrangement of parts in the attachmentof the brake-cylinder, triple valve, and auxiliary reservoir in properoperative relation to the framing of a railroad-car.

'To this end my invention, generally stated, consists in abrake-cylinder head, having an Outer face for the connection of atriple-valve mechanism, and ports leading from said face to the innerside of thehead, and connections for an auxiliary reservoir to the head0n either side of the cylinder.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure l is a view,'partly in elevationand partly in section, of a brake-cylinder, cylinder-head, and

triple valve, illustrating' the application of my invention; Fig. 2, anouter face View, in elevation, of the cylinder-head detached; and Figs.3 and 4, transverse sections through the AsFame at the lines x and y y,respectively, of

In the practice of myinvention, I provide a brake-cylinder head 1,0fdiameter corresponding, substantially, with that of the iiange 2 of thatend of a brake-cylinder 3 into Which air under pressure is admitted toactuat-e its piston 4:, the head being secured to the cylinderflange bybolts 5, passing` through holes 6 near the periphery of the head. A face7 is formed upon the outer side of the head l, and is properly trued oifto make a tight joint with the casing 8 of the triple-valve mechanism ofan automatic air-brake apparatus, the triple Valve communicating withthe main air or brake pipe by a connecting-pipe l5, and being secureddirectly to the head by bolts 9, passing through holes l0 in the head.The construction ofthe triple-valve mechanism7 (by which term is meantany device provided for the admission of air under pressure to anauxiliary reservoir, and the supply and exhaust of air from saidreservoir to and from a brake-cylinder) being Well known in the art andnot forming part of my presentinvention will not be herein described.

The open end of the slide-valve chamber of the triple valve communicatesWith a central port 1l in the adjacent face 7 of the head, said port inturn communicating through a passage 12 with a lateral auxiliaryreservoir connection-port 13, which is threaded or' other- Wise suitablyadapted for the attachment of apipe leading to the auxiliary reservoirof the brake system. In order to admit of the location of the auxiliaryreservoir on either the right or the left side of the brake-cylinder, asdesired, I preferably provide a port 13 on each side of the central port1l, one of said ports being connected to the auxiliary reservoir-pipe,and the other closed by a tight The supply and exhaust of air to andfrom the brake-cylinder are effected through a port la, formed in thecylinder-head l and extending from an opening I6 in the face '7, towhich the triple valve is secured, to the inner face of the head. Theouter opening 16 of the port la communicates directly Wit-h theairsupply port of the triple valve, by the operation of Whose mechanism,as is familiar to those skilled in the art, air under pressure isadmitted from the auxiliary reservoir to the brake-cylinder, passingthrough the ports 13 and l1 to the slide-valve chamber of the triplevalve, and thence through the opening 16 and port 14tto thebrake-cylinder. In the release of the brakes, ai r is discharged throughsaid opening and port to thc exhaust-port 17 of the triple valve.

Vhile I have illustrated a cylinder-head Which is made separate from andsecured to the brake-cylinder, such being the ordinary and preferredconstruetiomit will be obvious that the head might, if desired, beformed integral With the cylinder, and the ports could, further, belateral instead of endwise, preserving their described relation to thetriple-valve mechanism, brake-cylinder, and reservoirconnection.

My improvement simplifies the equipment ICO by the avoidance ofintermediate connections between the triple valve and brake-cylinderhead, correspondingly reducing tendency to leakage and degree oftraverse of air, and enables a convenient and compact arrangement andconnection of the several members to be attained without involvingmodification of structure other than as relates to the construction ofthe cylinder-head, as above described.

I claim as my invention and desire to secure by Letters Patent- In anautomatic-brake mechanism, the combination of a brake-cylinder, a triplevalve, an

auxiliary reservoir, and abrake-cylinderhead, h avn g a portestablishing communication between the brake-cylinder and triple valve,and a port opening into a passage or recess in the head, havingconnections by which a separate auxiliary reservoir may be directlyconnected to the head on eitherside of the cylinder, substantially asset forth.

In testimony whereof I have hereunto set my hand.

GEO. WESTINGHOUSE, J R. Vitnesses:

W. D. UPTEGRAFF, J. SNowDEN BELL.

